
a = [1, 2, 3]
b = a
b.append(4)
# print(a)
# print(a is b)
# print(id(a), id(b))


class People:
    pass

people = People()

# print(type(people) is People)
# print(isinstance(people, People))

print(id(People))
print(id(type(people)))
